I have been following the documentation to deploy a sawtooth test network (using docker) but failed with both poet and pbft versions.

The nightly tag of docker is outdated and does not work with the docker-compose anymore, however I have been able to deploy the poet version by just changing the tag part of the images in docker-compose from nightly to latest. After this change the "sawtooth peer list" and the "curl http://sawtooth-rest-api-default-0:8008/peers" commands work properly.
Yet when trying to set a key named MyKey to the value 999 according to this command, I run into other problems:
intkey set --url http://sawtooth-rest-api-default-0:8008 MyKey 999
I get the response:
{
"link": "http://sawtooth-rest-api-default-0:8008/batch_statuses?id=8a9cde13ada7bc4f06e6736acf54689515946d8865538544b6e71744a50f861d6621a9e5e94d073b495858116c7c7d5685c6341e65389af30d12bdea78d6b90c"
}

which may seem rational according to the documentation but when I try to run this command:
intkey show --url http://sawtooth-rest-api-default-1:8008 MyKey
I get the following response:
Error: No such key: MyKey

now if I curl the specified link from the response of the intkey set command I get that the status is pending
curl "http://sawtooth-rest-api-default-0:8008/batch_statuses?id=8a9cde13ada7bc4f06e6736acf54689515946d8865538544b6e71744a50f861d6621a9e5e94d073b495858116c7c7d5685c6341e65389af30d12bdea78d6b90c"
the response:
{
"data": [
{
"id": "8a9cde13ada7bc4f06e6736acf54689515946d8865538544b6e71744a50f861d6621a9e5e94d073b495858116c7c7d5685c6341e65389af30d12bdea78d6b90c",
"invalid_transactions": [],
"status": "PENDING"
}
],
"link": "http://sawtooth-rest-api-default-0:8008/batch_statuses?id=8a9cde13ada7bc4f06e6736acf54689515946d8865538544b6e71744a50f861d6621a9e5e94d073b495858116c7c7d5685c6341e65389af30d12bdea78d6b90c"
}